package com.nulldev.util.VariableAPI.util.strings.splitters.third_party;

import java.io.Serializable;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import com.nulldev.util.data.Variables;

/*
 * Copyright (C) 2016 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
final class JdkPattern extends CommonPattern implements Serializable {
	private final Pattern pattern;

	JdkPattern(Pattern pattern) {
		this.pattern = Variables.checkNotNull(pattern);
	}

	@Override
	public CommonMatcher matcher(CharSequence t) {
		return new JdkMatcher(pattern.matcher(t));
	}

	@Override
	public String pattern() {
		return pattern.pattern();
	}

	@Override
	public int flags() {
		return pattern.flags();
	}

	@Override
	public String toString() {
		return pattern.toString();
	}

	private static final class JdkMatcher extends CommonMatcher {
		final Matcher matcher;

		JdkMatcher(Matcher matcher) {
			this.matcher = Variables.checkNotNull(matcher);
		}

		@Override
		public boolean matches() {
			return matcher.matches();
		}

		@Override
		public boolean find() {
			return matcher.find();
		}

		@Override
		public boolean find(int index) {
			return matcher.find(index);
		}

		@Override
		public String replaceAll(String replacement) {
			return matcher.replaceAll(replacement);
		}

		@Override
		public int end() {
			return matcher.end();
		}

		@Override
		public int start() {
			return matcher.start();
		}
	}

	private static final long serialVersionUID = 0;
}
